Because bungie sets quests that include doing a certain number of heroic events and i have just had 5 cryo pod events screwed up on the tangled shore by people killing the boss early. I need 2 .. so far i dont have any. This is entirely bungies fault. If you gave a half decent reward maybe people would complete the heroic. If you cant do that.... dont make it a quest step! Seriously guys ... 2 tokens and an effing blue teach you nothing? Give a glimmer stash or something ... any kind of incentive to not screw people who hang around a map for hours to get a quest step done. Even an emote for evryone that says I NEED HEROIC ! .... well?